Nonstop flight route between Seattle, Washington, United States and Belfast, Northern Ireland, United Kingdom:

About this route:

A direct, nonstop flight between King County International Airport (BFI), Seattle, Washington, United States and Belfast International Airport (BFS), Belfast, Northern Ireland, United Kingdom would travel a Great Circle distance of 4,459 miles (or 7,176 kilometers).

A Great Circle is the shortest distance between 2 points on a sphere. Because most world maps are flat (but the Earth is round), the route of the shortest distance between 2 points on the Earth will often appear curved when viewed on a flat map, especially for long distances. If you were to simply draw a straight line on a flat map and measure a very long distance, it would likely be much further than if you were to lay a string between those two points on a globe. Because of the large distance between King County International Airport and Belfast International Airport, the route shown on this map most likely appears curved because of this reason.

Try it at home! Get a globe and tightly lay a string between King County International Airport and Belfast International Airport. You'll see that it will travel the same route of the red line on this map!

Departure Airport Information:

Arrival Airport Information:

Facts about King County International Airport (BFI):

• Helijet, a helicopter airline based at Vancouver International Airport in British Columbia, scheduled Sikorsky S-76s to the Victoria Harbour Heliport in British Columbia and on to Helijet's Vancouver Harbour Heliport near downtown Vancouver, B.C.
• At one point Aeroamerica scheduled a Boeing 720 to Spokane.
• In addition to being known as "King County International Airport", another name for BFI is "Boeing Field".
• The August 1946 OAG shows 24 United Airlines weekday departures, 10 Northwest and two or three Pan Am DC-3s to Juneau via Annette Island.
• The closest airport to King County International Airport (BFI) is Renton Municipal Airport (RNT), which is located only 5 miles (8 kilometers) ESE of BFI.
• The furthest airport from King County International Airport (BFI) is Tôlanaro Airport (FTU), which is located 10,775 miles (17,341 kilometers) away in Tôlanaro, Madagascar.
• Because of King County International Airport's relatively low elevation of 21 feet, planes can take off or land at King County International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Boeing Field as seen from the Air Traffic Control Tower
• King County International Airport (BFI) has 2 runways.

Facts about Belfast International Airport (BFS):

• In addition to being known as "Belfast International Airport", another name for BFS is "Belfast/Aldergrove Airport".
• Because of Belfast International Airport's relatively low elevation of 268 feet, planes can take off or land at Belfast International Airport at a lower air speed than at airports located at a higher elevation. This is because the air density is higher closer to sea level than it would otherwise be at higher elevations.
• Belfast International Airport handled 4,023,336 passengers last year.
• The airport lies within the parish of Killead, between the small villages of Killead and Aldergrove.
• The furthest airport from Belfast International Airport (BFS) is Ryan's Creek Aerodrome (SZS), which is located 11,847 miles (19,065 kilometers) away in Stewart Island, New Zealand.
• The closest airport to Belfast International Airport (BFS) is George Best Belfast City Airport (BHD), which is located only 14 miles (23 kilometers) E of BFS.
• During the Second World War, Aldergrove remained an RAF base particularly for the Coastal Command.
• In 2005 Continental Airlines launched the first ever direct scheduled service to Newark, and direct scheduled services were later introduced to Vancouver with Zoom Airlines but have now ceased following the carrier's demise in August 2008.
• Belfast International Airport (BFS) has 2 runways.
• By the 1950s civil air traffic had outstripped the facilities at Nutts Corner and, in addition, aircraft were being regularly diverted to Aldergrove because of adverse weather conditions.
• Work has been completed within the airport to move the 'Central Search' area from its previous location, this is part of a bigger plan to increase the area for the main departure Lounge.
• The site for the airport was established in 1917 when it was selected to be a Royal Flying Corps training establishment during the First World War.